JPS5594985A - Regeneration of colored phosphor - Google Patents
Regeneration of colored phosphorInfo
- Publication number
- JPS5594985A JPS5594985A JP135279A JP135279A JPS5594985A JP S5594985 A JPS5594985 A JP S5594985A JP 135279 A JP135279 A JP 135279A JP 135279 A JP135279 A JP 135279A JP S5594985 A JPS5594985 A JP S5594985A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- gelatin
- inorganic pigment
- polyvinylpyrrolidone
- washed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title abstract 7
- 230000008929 regeneration Effects 0.000 title 1
- 238000011069 regeneration method Methods 0.000 title 1
- 239000001023 inorganic pigment Substances 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 abstract 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 abstract 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 abstract 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 abstract 2
- 238000004381 surface treatment Methods 0.000 abstract 2
- 108010010803 Gelatin Proteins 0.000 abstract 1
- 229920000084 Gum arabic Polymers 0.000 abstract 1
- 239000005083 Zinc sulfide Substances 0.000 abstract 1
- SKQWEERDYRHPFP-UHFFFAOYSA-N [Y].S=O Chemical class [Y].S=O SKQWEERDYRHPFP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000205 acacia gum Substances 0.000 abstract 1
- 239000003513 alkali Substances 0.000 abstract 1
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 238000005119 centrifugation Methods 0.000 abstract 1
- 230000018044 dehydration Effects 0.000 abstract 1
- 238000006297 dehydration reaction Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 239000008273 gelatin Substances 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- 235000011852 gelatine desserts Nutrition 0.000 abstract 1
- 239000000049 pigment Substances 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 229920002554 vinyl polymer Polymers 0.000 abstract 1
- 239000002699 waste material Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 229910052984 zinc sulfide Inorganic materials 0.000 abstract 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Luminescent Compositions (AREA)
Abstract
PURPOSE: To regenerate red-luminescent Eu-activated yttrium oxysulfide and blue- and green-luminescent zinc sulfide-based phosphor by a method wherein recovered inorganic pigment-coated phosphor undergoes surface treatment with aqueous calcium hydroxide solution and then is deposited with inorganic pigment.
CONSTITUTION: Colored phosphor recovered from waste development solution as solid component is washed with aq. alkali solution at room temperature to 100°C to dissolve slurry components such as polyvinyl alcobol and ammonium dichromate and pigment binders such as gelatin and polyvinylpyrrolidone. The phosphor is then thoroghly washed with water and centrifugal treatment and undergoes surface treatment with 0.01wt% or more aqueous calcium hydroxide solution. Next, centrifugation, etc. is used for dehydration and drying of phosphor, and supplementary inorganic pigment is deposited by means of gelatin-gum arabic process or gelatin- polyvinylpyrrolidone process. This provides reusable colored phosphor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP135279A JPS5594985A (en) | 1979-01-12 | 1979-01-12 | Regeneration of colored phosphor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP135279A JPS5594985A (en) | 1979-01-12 | 1979-01-12 | Regeneration of colored phosphor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5594985A true JPS5594985A (en) | 1980-07-18 |
Family
ID=11499091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP135279A Pending JPS5594985A (en) | 1979-01-12 | 1979-01-12 | Regeneration of colored phosphor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5594985A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4000755A1 (en) * | 1990-01-12 | 1991-07-18 | Nokia Unterhaltungselektronik | METHOD FOR RECOVERY OF FLUORESCENT FOR PIPES |
-
1979
- 1979-01-12 JP JP135279A patent/JPS5594985A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4000755A1 (en) * | 1990-01-12 | 1991-07-18 | Nokia Unterhaltungselektronik | METHOD FOR RECOVERY OF FLUORESCENT FOR PIPES |
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